Dictionary,Defintion,Meaning,What is Batch Process, Benzoylation, Bauxite, Bayer Process, Beeswax, Benefication, Benzylamine

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Home >> Inorganic Chemistry Dictionary >> Batch Process - Benzoylation

	Batch process A manufacturing process in which the reactants are fed into the process in fixed quantities (batches), rather than in a continuous flow. At any particular instant all the material, from its preparation to the final product, has reached a definite stage in the process. Baking a cake is an example of a batch process. Such processes present problems of automation and instrumentation and tend to be wasteful of energy. For this reason, batch processing is only economically operated on an industrial scale when small quantities of valuable or strategic materials are required, e.g., drugs, titanium metal. Beeswax It is a mixture of mercyl palmitate, cerotic acid and esters, and some paraffins formed by bees. Used in shoe polishes and floor waxes.
Bauxite The ore of aluminium which is essentially AI2O3 with additional water molecules. The or is contaminated iron oxide and silica. Bayer process Process for making alumina form bauxite. Bauxite is mixed with hot concentrated sodium hydroxide, which dissolves the alumina and silica. The silica is precipitated and the dissolved alumina is separated from the solids, diluted, cooled and then is crystallized as aluminium hydroxide is calcined to give anhydrous alumina, which is then shipped to reduction plants.
The substituent groups can be varied either by choice of different starting reagents or by replacement after formation of the ring system. Certain substituted pyrimidines can exist on (2). Berkelium A radioactive transuranic element of the actinide series of metals, not found naturally on Earth. Several radioisotopes have been synthesized. Symbol: Bk; p.n. 97; stablest isotope 247 Bk (half-life 1400 years) Berylides Intermetallic compounds made by chemically combining beryllium with such metals as zirconium and tantalum.
Be Beryllium Benefication A process used in extractive metallurgy whereby an ore, either metallic or nonmetallic, has been concentrated in preparation for further processing (smelting). Calcinations is often an important step in beneficiation; others are physical separation of high grade ore from impurities (gangue), by screening, washing, milling or magnetic means.
	Benzoylation The term used for a chemical reaction in which a benzoyl group (benzene-carbonyl group, C6H5CO) gets introduced into a molecule. Benzylamine A colourless liquid (b.p. 458 k) having a characteristic ammo-niacal odour resembling aliphatic amine. It gives benzoic acid with potassium permanganate. Beryllium carbonate (BeCO3) An unstable solid which may be prepared by prolonged treatment of a suspension of beryllium hydroxide with carbon dioxide. The resulting solution gets evaporated and filtered in an atmosphere of carbon dioxide.

Beryllium
First member of the alkaline earth metals in the periodic table. It is very expensive metal, used for making parts of atomic reactor, for making alloys’s (BeCu), for making targets in particles accelerators, for making electrodes in neon lights, etc.

Beryllium chloride
(BeCI2) a white crystalline solid prepared by burning the beryllium in an atmosphere of chlorine. It dissolves in water with the evolution of heat, The anhydrous salt is used as a catalyst.

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